<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>myhtml2</title>
</head>
<body>
<div>
    <ul type="circle">
        <li>Linux</li>
        <li>Network</li>
        <li>Shell</li>
        <li>Database</li>
        <li>Python</li>
    </ul>
    <ul type="square">
        <li>Linux</li>
        <li>Network</li>
        <li>Shell</li>
        <li>Database</li>
        <li>Python</li>
    </ul>
    <ul type="disc">
        <li>Linux</li>
        <li>Network</li>
        <li>Shell</li>
        <li>Database</li>
        <li>Python</li>
    </ul>
</div>
<div>
    <ol type="A">
        <li>Linux</li>
        <li>Network</li>
        <li>Shell</li>
        <li>Database</li>
        <li>Python</li>
    </ol>
    <ol type="a" start="6">
        <li>Linux</li>
        <li>Network</li>
        <li>Shell</li>
        <li>Database</li>
        <li>Python</li>
    </ol>
    <ol type="I" start="10">
        <li>Linux</li>
        <li>Network</li>
        <li>Shell</li>
        <li>Database</li>
        <li>Python</li>
    </ol>
    <ol type="i">
        <li>Linux</li>
        <li>Network</li>
        <li>Shell</li>
        <li>Database</li>
        <li>Python</li>
    </ol>
    <ol>
        <li>Linux</li>
        <li>Network</li>
        <li>Shell</li>
        <li>Database</li>
        <li>Python</li>
    </ol>
</div>
<div>
    <table border="1px" width="500px">
        <tr>
            <td>阶段</td>
            <td>课程</td>
            <td>内容</td>
        </tr>
        <tr>
            <td>一</td>
            <td>Linux</td>
            <td>Linux System</td>
        </tr>
        <tr>
            <td>二</td>
            <td>Network</td>
            <td>Network Management</td>
        </tr>
        <tr>
            <td>三</td>
            <td>Service</td>
            <td>Linux Service</td>
        </tr>
        <tr>
            <td>四</td>
            <td>Python</td>
            <td>Python Programming</td>
        </tr>
        <tr>
            <td rowspan="2">111</td>
            <td colspan="2">111</td>
        </tr>
        <tr>
            <td>111</td>
            <td>111</td>
        </tr>
    </table>
</div>
</body>
</html>